1227643686213 has 32 divisors (see below), whose sum is σ = 1877181065472. Its totient is φ = 699079680000.

The previous prime is 1227643686209. The next prime is 1227643686259. The reversal of 1227643686213 is 3126863467221.

It is not a de Polignac number, because 1227643686213 - 2² = 1227643686209 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1227643606213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26275233 + ... + 26321913.

It is an arithmetic number, because the mean of its divisors is an integer number (58661908296).

Almost surely, 2^{1227643686213} is an apocalyptic number.

It is an amenable number.

1227643686213 is a deficient number, since it is larger than the sum of its proper divisors (649537379259).

1227643686213 is a wasteful number, since it uses less digits than its factorization.

1227643686213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51005.

The product of its digits is 3483648, while the sum is 51.

The spelling of 1227643686213 in words is "one trillion, two hundred twenty-seven billion, six hundred forty-three million, six hundred eighty-six thousand, two hundred thirteen".